Image sensing apparatus with settable focus detection area
US5187585A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1992 |
| Grant date | Feb 16, 1993 |
| Priority date | — |
| Expiry date | Jun 25, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/71
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An automatic focusing device which is capable of movably setting a focus detecting area on an image sensing plane comprises a position detecting circuit which detects the position of a picture-taking object within the focus detecting area, a storage circuit which stores a plurality of object position data detected at different points of time by the position detecting circuit, a computing circuit which computes the moving position of the focus detecting area by smoothing the object position data stored by the storage circuit and object position data currently detected, and an area setting circuit which shifts the focus detecting area on the basis of the shifting position computed by the computing circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.